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Understanding the interaction of organic corrosion inhibitors with copper at the molecular scale : benzotriazole on Cu(110)
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Turano, M., Walker, Marc, Grillo, F., Gattinoni, C., Edmondson, James, Adesida, O., Hunt, G., Kirkman, P., Richardson, N. V., Baddeley, C. J., Michaelides, A. and Costantini, Giovanni (2021) Understanding the interaction of organic corrosion inhibitors with copper at the molecular scale : benzotriazole on Cu(110). Applied Surface Science, 570 . 151206. doi:10.1016/j.apsusc.2021.151206 ISSN 0169-4332.
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WRAP-understanding-interaction-organic-corrosion-inhibitors-copper-molecular-scale-benzotriazole-Cu(110)-Costantini-2021.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (2155Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.apsusc.2021.151206
Abstract
Benzotriazole (BTAH) has been used for several industrial applications, but most commonly as a corrosion inhibitor for copper, since the 1950s. However, the mechanism of its interaction with copper surfaces at the atomistic scale is still a matter of debate. Here, the adsorption of BTAH onto a clean Cu(110) surface has been investigated by a combination of scanning tunnelling microscopy, X-ray photoelectron spectroscopy, high resolution electron energy loss spectroscopy and density functional theory calculations. Different supramolecular structures have been observed depending on molecular coverage and annealing. In the low coverage regime, flat lying deprotonated species are formed which give way to benzotriazolate molecules in an upright configuration by increasing the BTAH exposure. The ensuing monolayer is self-limiting but, upon annealing above 150 °C, transforms into a highly ordered nano-ridge structure resulting from a significant in-plane and out-of-plane reconstruction of the surface. All structures are characterised by a strong molecule-substrate interaction and the high coverage phases are dominated by the formation of metal-organic complexes between copper adatoms and benzotriazolate species. These findings shed light on the nature and strength of the interaction occurring between BTAH and copper which lies at the basis of the effectiveness of this prototypical corrosion inhibitor.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
Library of Congress Subject Headings (LCSH): | Copper -- Molecular rotation, Chemical inhibitors, Copper -- Surfaces, Heterocyclic compounds -- Research, Corrosion resistant materials, Copper -- Corrosion | ||||||||||||
Journal or Publication Title: | Applied Surface Science | ||||||||||||
Publisher: | Elsevier BV | ||||||||||||
ISSN: | 0169-4332 | ||||||||||||
Official Date: | 30 December 2021 | ||||||||||||
Dates: |
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Volume: | 570 | ||||||||||||
Article Number: | 151206 | ||||||||||||
DOI: | 10.1016/j.apsusc.2021.151206 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Date of first compliant deposit: | 13 September 2021 | ||||||||||||
Date of first compliant Open Access: | 8 September 2022 | ||||||||||||
RIOXX Funder/Project Grant: |
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